$ git clone -n https://src.fedoraproject.org/rpms/cxsc.git /var/lib/mock/f40-build-2284199-55624/root/chroot_tmpdir/scmroot/cxsc
Cloning into '/var/lib/mock/f40-build-2284199-55624/root/chroot_tmpdir/scmroot/cxsc'...
$ git fetch origin f503a4899a3118ec956328e9a6e3aa0bdb3dc028:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cxsc
 * [new ref]         f503a4899a3118ec956328e9a6e3aa0bdb3dc028 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f503a48 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild